Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 03.01.2009 beginning time = 1305 min.(UT), 21:45 UT Xbegin = -3.996 nT time of max = 1328 min.(UT), 22: 8 UT Xmax = 6.132 nT Y at Xmax = -0.426 nT endtime = 1388 min.(UT), 23: 8 UT Xend = -4.126 nT amplitude = 10.128 nT base duration time = 83 min. 2sigma = 5.467 nT duration at 2sigma = 9 min. flagbegin = 0 flagend = 0 flagxcheck = 0